EP0931930B1 - Moteur à poussée d'Archimède - Google Patents

Moteur à poussée d'Archimède Download PDF

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Publication number
EP0931930B1
EP0931930B1 EP99400105A EP99400105A EP0931930B1 EP 0931930 B1 EP0931930 B1 EP 0931930B1 EP 99400105 A EP99400105 A EP 99400105A EP 99400105 A EP99400105 A EP 99400105A EP 0931930 B1 EP0931930 B1 EP 0931930B1
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European Patent Office
Prior art keywords
tank
container
energy
pressurized fluid
belt
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EP99400105A
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German (de)
English (en)
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EP0931930A3 (fr
EP0931930A2 (fr
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Mohammad A. Alkhamis
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B17/00—Other machines or engines
    • F03B17/02—Other machines or engines using hydrostatic thrust
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/20—Hydro energy

Definitions

  • the present invention relates to energy converting devices which use the buoyancy of containers in water, and, in particular, the rising and falling of such containers in water, to convert energy.
  • U.S. Application Serial No. 08/887,604 filed July 3, 1997, the disclosure of which is hereby incorporated by reference.
  • Document US 4 726 188 discloses a motor utilizing, at least in part, buoyancy forces of different materials in a fluid, said motor comprising: a container filled with a fluid; a movable piston adapted for descending gravitationally and for ascending by buoyancy therein; a flexible line attached to said piston and mounted for movement such that it moves as said piston ascends and descends; and energy takeoff means operatively connected to said flexible line for producing output energy.
  • This known device is a very complex assembly a number of components, and it does not implement a naturally occurring source of pressurized fluid located outside of the container.
  • an energy converting device which converts energy by using rising and falling containers but which, among other advantages improves the use of energy to fill and empty the containers.
  • the invention provides an apparatus for converting energy from a naturally occurring source of pressurized fluid, preferably water, by harnessing buoyancy and gravitational forces, said apparatus comprising:
  • the energy takeoff means includes: a hydraulic pump connected to the shaft; a turbine connected to the hydraulic pump; and a generator connected to the turbine for producing electrical energy.
  • the energy takeoff means includes: a lifting unit driven by the shaft for lifting a weight from a first lower position to a second upper position; and a generator connected to the weight such that the generator produces electrical energy when the weight travels by gravity from the second position back toward the first position.
  • the apparatus further includes an air inlet port on the bottom side of the tank for enabling injection of air into the container.
  • the invention provides an apparatus for converting energy from a source of pressurized fluid, preferably water located at the top of a mountain, by harnessing buoyancy and gravitational forces, comprising:
  • the apparatus further includes: a boiler located at the bottom of the mountain for producing steam; an insulated pipe extending from the boiler to a turbine located at the top of the mountain for transporting the steam to the turbine; a generator connected to the turbine for producing electrical energy; and a condenser connected to the turbine for converting the steam to the pressurized fluid.
  • the energy takeoff means includes: hydraulic pumps connected to the shafts of the energy producing units; a hydraulic reservoir connected to the hydraulic pumps; a turbine connected to the hydraulic reservoir; and a generator connected to the turbine tor producing electrical energy.
  • the energy takeoff means includes: at least two lifting units driven by the shafts for lifting at least two weights at different times from a first lower position to a second upper position; and a generator connected to the weights such that the generator produces a continuous electrical energy output when the weights travel by gravity from the second position back toward the first position.
  • a method of generating energy from a naturally occurring source of pressurized fluid by harnessing buoyancy and gravitational forces is provided, said method being characterized by including the steps of:
  • FIG. 1 A first preferred embodiment of the energy converting device of the invention is shown in Fig. 1.
  • two tanks denoted 2 and 4 are attached to opposite ends of two chain belts 6.
  • the chain belts 6 are shown as being connected at one end to one side of the tank 2 at weld spots indicated schematically at 3 although other methods of attachment can, of course, be used.
  • the chain belts 6 loop over a drive shaft 24 and are in engagement with conventional one-way gear assemblies 7.
  • the gear assemblies 7 have teeth inserted into the holes of the chain belts 6 and operate, in a conventional manner, so that up and down movement of the belts 6 cause rotation of drive shaft 24 in a single direction.
  • the other ends of chain belts 6 are attached to tank 4 on the side of the tank not shown in Fig. 1.
  • the device converts energy by harnessing the rising and falling motion of the tanks 2 and 4 within a container 16 filled with water.
  • the container 16 is large and in an exemplary embodiment is 75 meters high. All metal materials are preferably stainless steel to avoid rust
  • Tank 2 includes at the top thereof a water inlet 8 and at the bottom thereof, an air inlet pipe 10 and a water drainage pipe 12. It is preferred that the air inlet pipe 10 extend to the top of the container 2 to optimize the rate at which water is drained from the tank 2.
  • Fig. 1 the tank 2 is shown at the bottom of the container 16, initially the tank 2 is at the top of the container 16.
  • the container 16 is preferably located in front of a dam on a river bank. The river supplies the energy necessary to move the water through the pipe 14.
  • a brake mechanism 19 includes a gear member 15. The teeth of the gear member 15 are inserted into the holes of one of the chain belts 6 while a shaft 17 connects the gear member 15 to a brake 21.
  • the brake 21 stops the motion of the chain belts 6 by applying a frictional force to the shaft 17.
  • the brake mechanism 19 holds the tanks 2 and 4 in place during filling and emptying.
  • a similar brake mechanism is connected to shaft 24.
  • a pair of spaced drainage pipes 18 and 20 are provided in the bottom of container 16 and when tank 2 reaches the bottom, the air inlet pipe 10 and the water drainage pipe 12 are received in and extend into drainage pipes 18 and 20, respectively.
  • Fig. 1A shows the air inlet pipe 10 partially inserted into the drainage pipe 18.
  • the air inlet pipe 10 includes a push rod 78 attached to an end which inserts into the drainage pipe 18.
  • a valve 74 is attached to the air inlet pipe 10 with springs 82.
  • the valve 74 is closed and forms an air tight seal.
  • a push rod 76, attached to the drainage pipe 18 forces the springs 82 to expand and the valve 74 to open.
  • a similar valve 80 is attached by springs 83 to drainage pipe 18 and in a similar manner, the push rod 78, attached to the air inlet pipe 10, forces springs 83 to expand and open valve 80.
  • An air tight seal is thus formed between the air inlet pipe 10 and the water drainage pipe 12 with the aid of seal 34.
  • the water drainage pipe 12 and the drainage pipe 20 have a similar construction to that described above for pipes 10 and 18. Any valve arrangement or other structure can be used to keep the respective valves closed while the air inlet pipe 10 and the water drainage pipe 12 are not inserted into respective drainage pipes 18 and 20.
  • tank 4 When tank 2 is at the bottom of the container 16, tank 4 is at the top of the container 16. While tank 2 is at the bottom of the container 16, the brake mechanism 19 stops the chain belts 6 so that the tank 2 can drain. Air enters the air inlet pipe 10, while water drains through the water drainage pipe 12. Once the water is drained and the tank 2 is filled with air, the tank 2 rises to the top of the container 16. Tank 2 will rise because the combined weight of the tank 2 and the air inside of the tank are lighter than the weight of the water displaced by the tank 2.
  • tank 4 The operation of tank 4 is, of course, similar to that of tank 2 but tank 4 rises when tank 2 descends and vice versa. As noted above, the rising and falling of tanks 2 and 4 cause the chain belts 6 to move up and down and to cause rotation of shaft 24. Because of the one-way gear assemblies 7, the rotation of shaft 24 is always in the same direction. The rotational movement of shaft 24 is harnessed to generate power.
  • a shaft 24 is connected to a hydraulic pump 22.
  • the hydraulic pump 22 fills a reservoir 24 through a connecting pipe 40.
  • the fluid in the reservoir 24 is extracted to drive a turbine 26, which in turn drives a generator 38.
  • the fluid returns to the hydraulic pump 22 through a connecting pipe 41.
  • the shaft 24 is connected to a lifting unit 28 through a gearbox 36.
  • the lifting unit raises a weight 30.
  • the kinetic energy of the chain belts 6 are transferred into the potential energy of the weight 30.
  • a generator 32 is connected to the lifting unit 28 and the weight 30 such that the generator 32 produces energy when the weight 30 is lowered.
  • two or more of the energy producing devices described above are connected to a common shaft to produce a more steady output.
  • Fig. 1 can be attached to a stand or other support sunk into the bed of a deep lake or in an ocean.
  • the device would operate in essentially the same manner as the first embodiment shown in Fig. 1. However, the draining operation would be different because of the water pressure at the bottom of the lake or ocean.
  • the tanks 2 and 4 would be emptied by applying vacuum pressure to a drainage port at the bottom of the tanks. In one example, an electric pump is used to apply the vacuum pressure and the air inlet pipe 10 is connected to the atmosphere above the lake or ocean.
  • FIG. 2 there is shown a device generally denoted 43, constructed in accordance with a second embodiment of the invention.
  • five separate containers 16A-16E which are identical to the container 16, of Fig. 1, are arranged in a step-like configuration against a mountain 44.
  • a natural water source 42 is shown on top of mountain 44 and the latter preferably has a height of at least 2000 meters. The natural water source 42 supplies water to the device 43 through a fill pipe 14.
  • Containers 16A-16E include tanks corresponding to the tanks 2 and 4 shown in Fig. 1 and draining and filling of these tanks takes longer than the rising and falling motions. For the embodiment shown in Fig. 2, it is assumed that draining and filling takes 5 minutes and the rising and falling motions take 1 minute. With these assumptions, five containers 16A-16E are used to produce a steady output, as described below.
  • Containers 16A-16E also include a brake corresponding to the brake 21 shown in Fig. 1, the brake in container 16A is released first. The corresponding tanks 2 and 4 then rise and fall within container 16A. One minute later, the tanks 2 and 4 have completed their travel in the container 16A. While the lower tank of tanks 2 and 4 is draining into a reservoir (not shown), the brake is released in container 16B. The water drained from the tanks in container 16A is transferred through an intermediate reservoir (not shown) into the tanks in container 16B. The reservoir is needed because the tanks in container 16A take one minute to drain and fill while the tanks in container 16B are rising and falling.
  • each of the hydraulic pumps 22A-22E fills a reservoir 24R through a respective connecting pipe 40A-40E.
  • the fluid in the reservoir 24R is extracted to drive a turbine 26 which, in turn, drives a generator 38.
  • the fluid returns to the hydraulic pumps 22A-22E through connecting pipes 41A-41E.
  • the use of multiple containers 16A-16E ensures that there is a constant pressure applied to the reservoir 24R.
  • the number of containers used in the embodiment shown in Fig. 2 is five, the actual number of containers used is a function of the ratio of the draining and filling time to the rising and falling time.
  • the number of containers is preferably chosen such that there is a constant pressure on the reservoir 24R.
  • multiple groups of containers are used.
  • the embodiment shown in Fig. 2 could use ten groups of five containers such that ten containers are always pressurizing the reservoir 24R.
  • the mechanical output of the containers 16A-16E is connected to at least two lifting units (not shown) through gearboxes (not shown), in manner similar to that shown in Fig. 1.
  • the lifting units raise at least two weights so that there is always at least one weight being lowered to drive a generator.
  • Fig. 2 (and the related embodiments) is that it can be used to transfer potable water from the top of a mountain to an urban environment located at the bottom of a mountain while also generating power.
  • Fig. 2 can also be used in places without a natural supply of water at the top of a mountain.
  • Fig. 3 shows a third embodiment which uses a source of sea water 62 at the bottom of the mountain 44.
  • the sea water 62 is supplied by a connecting hose or pipe 63 to a boiler 64 which produces steam.
  • the resulting steam travels up an insulated pipe 66 to a turbine 68.
  • the turbine 68 drives a generator 70 with a shaft 84.
  • the output of the generator 70 travels through conductors 88 to help power the boiler 64.
  • Steam leaving the turbine 68 passes through a pipe 86 to a condenser 72.
  • the water leaving the condenser passes through another pipe 74 to the reservoir 42.
  • the basic energy converting device 43 then operates in the same manner as the second embodiment shown in Fig. 2.
  • a predetermined quantity of water 62 can be repeatedly used by the device 43 so that no new water is needed.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)

Claims (18)

  1. Dispositif pour convertir l'énergie produite par une source naturelle de fluide sous pression en exploitant les forces nées de la poussée d'Archimède et de la pesanteur, ledit dispositif comprenant :
    un réservoir (16) rempli de fluide et ayant un haut et un bas ;
    au moins une cuve (2) conçue pour descendre sous l'effet de la pesanteur et pour monter sous l'effet de la poussée d'Archimède dans ledit réservoir ;
    un cordon flexible (6) fixé à ladite au moins une cuve (2) et monté pour bouger de façon que ledit cordon flexible (6) bouge lorsque ladite au moins une cuve (2) s'élève et descend dans ledit réservoir ; et
    des moyens d'extraction d'énergie (22, 24R, 26, 38) coopérant avec ledit cordon flexible (6) pour produire une énergie de sortie ;
       caractérisé en ce que :
    ladite au moins une cuve (2) comporte un orifice d'entrée (8) sur un côté haut de celle-ci pour recevoir un fluide sous pression provenant d'une source naturelle (42, 62) à l'extérieur dudit réservoir (6) lorsque ladite au moins une cuve (2) est en haut dudit réservoir (16), et un orifice d'évacuation séparée (12) du côté du bas de celui-ci pour évacuer ledit fluide sous pression de ladite au moins une cuve (2) lorsque ladite au moins une cuve est dans le bas dudit réservoir (16), afin que ladite au moins une cuve (2) soit amenée à s'élever, sous l'effet de la poussée d'Archimède, jusqu'en haut du réservoir (16) ;
    ledit cordon flexible est une courroie (6) fixée à ladite au moins une cuve (2) et montée pour se déplacer verticalement de telle sorte que ladite courroie (26) monte et descende lorsque ladite au moins une cuve (2) s'élève et descend dans ledit réservoir ;
    un arbre (24) accouplé avec ladite courroie (6) de façon à tourner en réponse au mouvement de montée et de descente de ladite courroie ; et
    lesdits moyens d'extraction d'énergie (22, 24R, 26, 38) sont entraínés par ledit cordon flexible (6) pour produire une énergie de sortie.
  2. Dispositif selon la revendication 1, caractérisé en ce que ledit fluide sous pression est de l'eau.
  3. Dispositif selon la revendication 1, caractérisé en ce que lesdits moyens d'extraction d'énergie comprennent :
    une pompe hydraulique (22) accouplée avec ledit arbre (24) ;
    une turbine (26) accouplée avec ladite pompe hydraulique (22) ; et
    un générateur (38) accouplé avec ladite turbine (26) pour produire de l'électricité.
  4. Dispositif selon la revendication 1, caractérisé en ce que lesdits moyens d'extraction d'énergie comprennent :
    un système de levage (28) entraíné par ledit arbre (24) pour lever un poids (30) d'une première position basse à une deuxième position haute ; et
    un générateur (32) accouplé avec ledit poids (30) de façon que ledit générateur (32) produise de l'électricité lorsque ledit poids (30) revient, sous l'effet de la pesanteur, de ladite deuxième position vers ladite première position.
  5. Dispositif selon la revendication 1, caractérisé en ce qu'il comprend en outre un orifice d'entrée d'air (18) sur ledit côté bas de ladite au moins une cuve (2) pour permettre l'injection d'air dans ledit au moins un réservoir (16).
  6. Dispositif selon la revendication 5, caractérisé en ce que ledit orifice d'entrée d'air (18) comporte un tuyau (10) s'étendant à l'intérieur de ladite au moins une cuve (2) depuis ledit côté bas dudit au moins un réservoir (16) jusqu'à une position très proche dudit côté haut de ladite au moins une cuve (2) pour permettre une entrée d'air dans ladite au moins une cuve (2) pendant que ledit fluide sous pression est évacué depuis ledit orifice d'évacuation (20).
  7. Dispositif selon la revendication 5, caractérisé en ce que ledit orifice d'entrée d'air (18) comporte une sortie située à l'intérieur de ladite au moins une cuve (2) à un niveau au-dessus dudit orifice d'évacuation (20).
  8. Dispositif selon la revendication 1, caractérisé en ce que ladite au moins une cuve comprend deux cuves (2, 4), et en ce que lesdites cuves (2, 4) sont levées et abaissées sur une trajectoire rectiligne verticale.
  9. Dispositif selon la revendication 1, caractérisé en ce que ladite au moins une cuve (2) est hermétiquement fermée et ledit orifice d'entrée (18) et ledit orifice d'évacuation (20) comportent des moyens formant vannes (74, 80) pour fermer hermétiquement lesdits orifices.
  10. Dispositif pour convertir de l'énergie provenant d'une source de fluide sous pression en exploitant des forces nées de la poussée d'Archimède et de la pesanteur, comprenant :
    au moins un réservoir (16) rempli d'un fluide et ayant un haut et un bas ;
    au moins une cuve (2) conçue pour descendre sous l'action de la pesanteur et pour s'élever sous l'effet de la poussée d'Archimède dans ledit réservoir ;
    un cordon flexible (6) fixé à ladite au moins une cuve (2) et monté pour bouger de façon que ledit cordon flexible (6) bouge lorsque ladite au moins une cuve (2) monte et descend dans ledit réservoir ; et
    des moyens d'extraction d'énergie (22, 24R, 26, 38) coopérant avec ledit cordon flexible (6) pour produire une énergie de sortie ;
       caractérisé en ce que :
    ledit dispositif comprend une pluralité d'unités de conversion d'énergie, chacune desdites unités de conversion d'énergie comprenant :
    un réservoir (16) rempli de fluide et ayant un haut et un bas ;
    ladite au moins une cuve (2) ayant un orifice d'entrée (18) sur un côté haut de celle-ci pour recevoir un fluide sous pression provenant d'une source lorsque ladite au moins une cuve (2) est dans le haut dudit réservoir (16), et un orifice d'évacuation (12) sur un côté bas de celle-ci pour évacuer ledit fluide sous pression de ladite au moins une cuve (2) lorsque ladite au moins une cuve (2) est dans le bas dudit réservoir (16) de façon que ladite au moins une cuve (2) soit amenée à monter, sous l'effet de la poussée d'Archimède, jusqu'en haut du réservoir (16) ;
    un cordon flexible constitué par une courroie (6) fixée à ladite au moins une cuve (2) et montée pour bouger verticalement de façon que ledit cordon (6) s'élève et s'abaisse lorsque ladite au moins une cuve (2) monte et descend dans ledit réservoir (16) ; et
    un arbre (24) accouplé avec ledit cordon (6) de façon à tourner en réponse au mouvement de montée et de descente de ladite courroie (6) ; et
    un moyen d'extraction d'énergie (24R, 26, 38), entraíné par ledit arbre (24), pour produire une énergie de sortie ;
    une première desdites unités de conversion d'énergie (16A-16E) étant placées au-dessus d'une deuxième desdites unités de conversion d'énergie de telle sorte que le fluide sous pression sorte de la première unité de conversion d'énergie pour entrer dans ladite deuxième unité de production d'énergie.
  11. Dispositif selon la revendication 10, caractérisé en ce que ledit fluide sous pression est de l'eau située en haut d'une montagne (44).
  12. Dispositif selon la revendication 11, caractérisé en ce qu'il comprend en outre :
    une chaudière (64) située dans le bas de ladite montagne (44) pour produire de la vapeur ;
    un tuyau isolé (66) s'étendant de ladite chaudière (64) à une turbine (68) située en haut de ladite montagne (44) pour transporter ladite vapeur jusqu'à ladite turbine (68) ;
    un générateur (70) accouplé avec ladite turbine (68) pour produire de l'électricité ; et
    un condenseur (72) accouplé avec ladite turbine (68) pour convertir ladite vapeur en ledit fluide sous pression.
  13. Dispositif selon la revendication 10, caractérisé en ce que lesdits moyens d'extraction d'énergie comprennent :
    des pompes hydrauliques (22A-22E) accouplés avec lesdits arbres desdites unités de conversion d'énergie ;
    une bâche hydraulique (42) reliée auxdites pompes hydrauliques ;
    une turbine (68) reliée à ladite bâche hydraulique (42) ; et
    un générateur (70) accouplé avec ladite turbine (68) pour produire de l'électricité.
  14. Dispositif selon la revendication 10, caractérisé en ce que lesdits moyens d'extraction d'énergie comprennent :
    au moins deux systèmes de levage entraínés par lesdits arbres pour lever au moins deux poids à des instants différents, d'une première position basse à une deuxième position haute ; et
    un générateur relié auxdits poids de façon que ledit générateur produise une énergie électrique continue de sortie lorsque lesdits poids reviennent, sous l'effet de la pesanteur, de ladite deuxième position vers ladite première position.
  15. Procédé de production d'énergie à partir d'une source naturelle de fluide sous pression en exploitant des forces nées de la poussée d'Archimède et de la pesanteur agissant sur au moins une cuve située à l'intérieur d'un réservoir et fixée à une bande à traction par chaíne montée pour bouger verticalement, caractérisé en que qu'il comprend les étapes consistant à :
    remplir de fluide un réservoir (16) ayant un haut et un bas ;
    remplir au moins une cuve (2) située dans ledit réservoir à l'aide d'un fluide sous pression provenant d'une source naturelle située à l'extérieur du réservoir (16), via un orifice d'entrée (8), pendant que ladite au moins une cuve est dans ledit haut dudit réservoir ;
    laisser ladite au moins une cuve (2) aller sous l'effet de la pesanteur jusqu'audit bas dudit réservoir (16) pour provoquer un mouvement d'une bande à traction par chaíne ;
    évacuer ledit fluide sous pression de ladite au moins une cuve (2) via un orifice d'évacuation séparé (12), pendant que ladite au moins une cuve est dans ledit bas dudit réservoir (16) ; et
    laisser ladite au moins une cuve (2) aller jusqu'en haut dudit réservoir (16), sous l'effet de la force née de la poussée d'Archimède agissant sur ladite cuve, pour provoquer un mouvement de ladite bande à traction par chaíne (6) et d'un arbre (24) accouplé avec ladite bande à traction par chaíne.
  16. Procédé selon la revendication 15, caractérisé en ce qu'il comprend en outre l'étape consistant à remplir d'air ladite au moins une cuve (2) pendant que ladite au moins une cuve (2) est dans le bas dudit réservoir (16) et pendant que ladite au moins une cuve (2) se vide.
  17. Procédé selon la revendication 16, caractérisé en ce que ledit vidage de ladite au moins une cuve (2) comporte une évacuation dudit fluide sous pression via un orifice d'évacuation inférieur et ledit remplissage de ladite au moins une cuve (2) par de l'air comprend une injection d'air dans ladite au moins une cuve (2) en un point d'entrée situé au-dessus dudit orifice d'évacuation inférieur.
  18. Procédé selon la revendication 15, caractérisé en ce que ladite au moins une cuve comprend deux cuves (2, 4), lesdites cuves (2, 4) étant levées et abaissées sur une trajectoire rectiligne verticale.
EP99400105A 1998-01-21 1999-01-18 Moteur à poussée d'Archimède Expired - Lifetime EP0931930B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10036 1998-01-21
US09/010,036 US6009707A (en) 1998-01-21 1998-01-21 Buoyancy driven energy producing device

Publications (3)

Publication Number Publication Date
EP0931930A2 EP0931930A2 (fr) 1999-07-28
EP0931930A3 EP0931930A3 (fr) 2001-11-14
EP0931930B1 true EP0931930B1 (fr) 2005-10-26

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US (1) US6009707A (fr)
EP (1) EP0931930B1 (fr)
AT (1) ATE307975T1 (fr)
DE (1) DE69927859T2 (fr)

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CH695832A5 (de) * 1997-08-22 2006-09-15 Istvan Simon Hydraulischer Antrieb.
US20030075928A1 (en) * 2001-08-23 2003-04-24 Carpenter Donald G. Energy conversion technique
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DE69927859T2 (de) 2006-07-27
US6009707A (en) 2000-01-04
EP0931930A3 (fr) 2001-11-14
EP0931930A2 (fr) 1999-07-28
ATE307975T1 (de) 2005-11-15
DE69927859D1 (de) 2005-12-01

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